import fetch from 'dva/fetch';
import { notification } from 'antd';
import { routerRedux } from 'dva/router';
import cookie from 'cookie';
import { getAuthorization } from './authority';
import store from '../index';

const codeMessage = {
  200: '服务器成功返回请求的数据。',
  201: '新建或修改数据成功。',
  202: '一个请求已经进入后台排队（异步任务）。',
  204: '删除数据成功。',
  400: '发出的请求有错误，服务器没有进行新建或修改数据的操作。',
  401: '用户没有权限（令牌、用户名、密码错误）。',
  403: '用户得到授权，但是访问是被禁止的。',
  404: '发出的请求针对的是不存在的记录，服务器没有进行操作。',
  406: '请求的格式不可得。',
  410: '请求的资源被永久删除，且不会再得到的。',
  422: '当创建一个对象时，发生一个验证错误。',
  500: '服务器发生错误，请检查服务器。',
  502: '网关错误。',
  503: '服务不可用，服务器暂时过载或维护。',
  504: '网关超时。',
};

function checkStatus (response) {
  if (response.status >= 200 && response.status < 300) {
    return response;
  }

  const { dispatch } = store;
  const { status } = response;
  const pathnamePrefix = window.location.pathname.replace(/^(\/admin)?.*$/, '$1');

  if (status === 401) {
    dispatch({ type: 'adminLogin/logout' });
  } else if (status === 403) {
    dispatch(routerRedux.push(`${pathnamePrefix}/exception/403`));
  } else if (status === 404) {
    dispatch(routerRedux.push(`${pathnamePrefix}/exception/404`));
  } else if (status >= 500 && status <= 504) {
    dispatch(routerRedux.push(`${pathnamePrefix}/exception/500`));
  } else if (status >= 404 && status < 422) {
    //
  }

  const errorText = codeMessage[response.status] || response.statusText;
  notification.error({
    message: `请求错误 ${response.status}: ${response.url}`,
    description: errorText,
  });
  const error = new Error(errorText);
  error.name = response.status;
  error.response = response;
  throw error;
}

/**
 * Requests a URL, returning a promise.
 *
 * @param  {string} url       The URL we want to request
 * @param  {object} [options] The options we want to pass to "fetch"
 * @return {object}           An object containing either "data" or "err"
 */
export default async function request (url, options) {
  const defaultOptions = {
    method: 'GET',
    credentials: 'include',
    headers: {
      Accept: 'application/x.sheng.v1+json',
      'Content-Type': 'application/json; charset=utf-8',
      Authorization: getAuthorization(),
      'X-XSRF-TOKEN': cookie.parse(document.cookie)['XSRF-TOKEN'],
    },
  };
  const newOptions = { ...defaultOptions, ...options };

  if (['POST', 'PUT', 'PATCH'].includes(newOptions.method.toUpperCase())) {
    if (!(newOptions.body instanceof FormData)) {
      newOptions.headers = {
        Accept: 'application/x.sheng.v1+json',
        'Content-Type': 'application/json; charset=utf-8',
        ...newOptions.headers,
      };
      newOptions.body = JSON.stringify(newOptions.body);
    }
  }

  const response = await fetch(url, newOptions);

  /* eslint-disable */
  if (typeof phpdebugbar !== undefined) {
    try {
      const { ajaxHandler: { headerName } } = phpdebugbar;
      const debugBarData = response.headers.get(headerName);
      const debugBarId = response.headers.get(`${headerName}-id`);
      if (debugBarData) {
        const { id, data } = JSON.parse(decodeURIComponent(debugBarData));
        phpdebugbar.addDataSet(data, id);
      } else if (debugBarId && phpdebugbar.openHandler) {
        phpdebugbar.loadDataSet(debugBarId, '(ajax)');
      }
    } catch (e) {
    }
  }
  /* eslint-enable */

  checkStatus(response);
  return response.json();
}
